[Perf] Windows/x86: 1 Regression on 4/10/2026 11:28:27 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x86
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [ce3e7165836e64efbfe6f7a874991715b40e28bf](https://github.com/dotnet/runtime/commit/ce3e7165836e64efbfe6f7a874991715b40e28bf)
Compare | [a931a075399d742844efd7c4879032861e444152](https://github.com/dotnet/runtime/commit/a931a075399d742844efd7c4879032861e444152)
Diff | [Diff](https://github.com/dotnet/runtime/compare/ce3e7165836e64efbfe6f7a874991715b40e28bf...a931a075399d742844efd7c4879032861e444152)
Configs | CompilationMode:tiered, RunKind:micro

### Regressions in System.Text.RegularExpressions.Tests.Perf_Regex_Industry_Rebar_Russian

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|

• [Count - Duration of single invocation]()
• 📝 - [Benchmark Source]()
• [ADX - Test Multi Config Graph]()

[Test Report]()

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.RegularExpressions.Tests.Perf_Regex_Industry_Rebar_Russian*'
```

### System.Text.RegularExpressions.Tests.Perf_Regex_Industry_Rebar_Russian.Count(Pattern: "Шерлок Холмс", Options: None)

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)